Global Patent Index - EP 2393094 A1

EP 2393094 A1 20111207 - Switch unit with arc-extinguishing units

Title (en)

Switch unit with arc-extinguishing units

Title (de)

Schalteinheit mit Bogenauslöscheinheiten

Title (fr)

Unité de commutation dotée d'unités d'extinction d'arc

Publication

EP 2393094 A1 20111207 (EN)

Application

EP 10165139 A 20100607

Priority

EP 10165139 A 20100607

Abstract (en)

The invention relates to a switch (1) suitable for DC applications comprising two fixed conductive contacts (2) with first contact areas (21, 22), a movable conductive bridge (3) with two second contact areas (31, 32) for being connected to the two first contact areas (21, 22) in the on-status and for being disconnected from the two the first contact areas (21, 22) in the off-status and two arc-extinguishing units (41, 42) to extinguish electric arcs (51, 52) occurring between the first and second contact areas (21, 22, 31, 32) after disconnecting the second contact areas (31, 32) from the first contact areas (21, 22), wherein first conductive arc-guiding elements (61) extend from each first contact area (21, 22) into the corresponding arc-extinguishing unit (41, 42) and at least one second conductive arc-guiding element (62) extends into the arc-extinguishing units (41, 42) suitably shaped to guide the electric arcs (51, 52) from each of the second contact areas (31, 32) of the movable bridge (3) into the arc-extinguishing units (41, 42), wherein at least two permanent magnets (71, 72) are suitably arranged adjacent to the first and second contact areas (21, 22, 31, 32) to provide a magnetic field (B) suitable to support the guiding of the electric arc (51, 52) into the arc-extinguishing units (41, 42), wherein at least parts (621, 622) of the second arc-guiding element (62) are made of a magnetic permeable material, which are connected to the permanent magnets (71, 72) as a back iron for the permanent magnets (71, 72) to increase the strength of the magnetic field (B) between the permanent magnets (71, 72).

IPC 8 full level

H01H 9/34 (2006.01); H01H 77/10 (2006.01)

CPC (source: EP US)

H01H 9/341 (2013.01 - EP US); H01H 33/20 (2013.01 - US); H01H 77/10 (2013.01 - EP US); H01H 1/20 (2013.01 - EP US)

Citation (applicant)

EP 1884969 A2 20080206 - SCHALTBAU GMBH [DE]

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

BA ME RS

DOCDB simple family (publication)

EP 2393094 A1 20111207; BR 112012031245 A2 20161101; CA 2801985 A1 20111215; CN 103069523 A 20130424; EP 2577698 A1 20130410; EP 2577698 B1 20180110; EP 2577698 B8 20180404; PL 2577698 T3 20181031; RU 2012157784 A 20140720; RU 2561716 C2 20150910; US 2013206729 A1 20130815; US 8921728 B2 20141230; WO 2011154380 A1 20111215

DOCDB simple family (application)

EP 10165139 A 20100607; BR 112012031245 A 20110607; CA 2801985 A 20110607; CN 201180038875 A 20110607; EP 11724191 A 20110607; EP 2011059338 W 20110607; PL 11724191 T 20110607; RU 2012157784 A 20110607; US 201113702374 A 20110607